H02M 1/0096
Means for increasing hold-up time, i.e. the duration of time that a
Official title: {Means for increasing hold-up time, i.e. the duration of time that a converter's output will remain within regulated limits following a loss of input power}
H02M1/0096 (Means for increasing hold-up time, i.e. the duration of time that a) appears on 159 US grants and 187 published applications in this corpus.
Search patents in H02M- Granted patents
- 159
- Published applications
- 187
- Assignees
- 133
- Inventors
- 421
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 4 |
| 2006 | 1 | 2 |
| 2007 | 2 | 1 |
| 2008 | 2 | 1 |
| 2009 | 2 | 6 |
| 2010 | 4 | 2 |
| 2011 | 2 | 5 |
| 2012 | 1 | 2 |
| 2013 | 2 | 9 |
| 2014 | 6 | 14 |
| 2015 | 7 | 7 |
| 2016 | 14 | 13 |
| 2017 | 10 | 5 |
| 2018 | 8 | 7 |
| 2019 | 8 | 10 |
| 2020 | 11 | 16 |
| 2021 | 18 | 13 |
| 2022 | 13 | 18 |
| 2023 | 12 | 14 |
| 2024 | 13 | 12 |
| 2025 | 8 | 8 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power conversion apparatus, control apparatus, and switch-mode power supply6 Oct 2026US 12,756,298 B2Huawei Digital Power Technologies Co., Ltd.
- Converter with hold-up circuit and inrush-control circuit23 Jun 2026US 12,665,490 B2Murata Manufacturing Co., Ltd.
- Apparatus and method for limiting inrush current and extending hold-up time in an AC-DC power conversion apparatus9 Jun 2026US 12,651,961 B2Huawei Technologies Co., Ltd.
- Hold-up time extension for totem pole bridgeless power factor correction24 Mar 2026US 12,587,086 B2Dell Products L. P.
- Resonant converter with primary winding short to increase energy in resonant tank2 Dec 2025US 12,489,365 B2Aplus Power Technology (Hangzhou) Co., Ltd.
- Hold-up time circuit for llc converter13 Aug 2026US 2026/0238112 A1AES Global Holdings PTE Ltd.
- Higher efficiency, longer holdup time dc input front end power supply6 Aug 2026US 2026/0229993 A1Cisco Technology, Inc.
- Circuit and motor resistant to voltage sag30 Jul 2026US 2026/0221915 A1Schneider Electric Industries SAS
- Power supply device and image processing apparatus23 Jul 2026US 2026/0213647 A1Konica Minolta, Inc.
- Supercapacitor-Integrated Power Conversion System9 Jul 2026US 2026/0196940 A1AA Power Inc.
Most cited
By later US patents
- Circuit for maintaining hold-up time while reducing bulk capacitor size and improving efficiency in a power supply81US 7,061,212 B2Astec International Limited · 2006
- Energy storage and hold-up method and apparatus for high density power conversion79US 7,616,465 B1VLT, Inc. · 2009
- Method and apparatus for charging batteries63US 7,202,636 B2Illinois Tool Works Inc. · 2007
- Energy storage circuit for DC-DC converter58US 6,538,906 B1Delta Electronics, Inc. · 2003
- Output hold-up circuit for a step-up voltage regulator41US 4,743,835 AUnisys Corporation · 1988